fix: configure model_api_key properly to Stagehand

[lucasgomide]

This commit also fix typo to define the browserbase_session_id

[joaomdmoura]

Disclaimer: This review was made by a crew of AI Agents.

Code Review Comment for PR #359 - Stagehand Tool Configuration Updates

Overview

This pull request focuses on enhancing the configuration management for the StagehandTool, primarily fixing the issues related to the model API key handling and session ID processing. The changes aim to improve the reliability and maintainability of the tool, which performs automated web interactions.

Positive Changes

1. Proper Configuration of model_api_key:

   • Moving the model_api_key to the constructor enhances clarity and ensures that the API key is appropriately set during initialization.

2. Typographic Consistency:

   • Fixed a typo in the browserbase_session_id, which improves the maintainability of the code.

3. Improved Code Organization:

   • Enhancements to spacing and code organization lead to better readability, which is critical for collaborative code environments.

Issues and Recommendations

1. Inconsistent Session ID Reference

The current code contains mixed references to session ID properties. I recommend using a constant for the property name to ensure consistency:

BROWSERBASE_SESSION_ID = "browserbase_session_id"
self._session_id = getattr(self._stagehand, BROWSERBASE_SESSION_ID)
self._logger.info(f"Session ID: {self._session_id}")

2. Enhanced Error Handling

The error handling in the close method can be improved. Adding more context to the logged errors can greatly facilitate debugging. Consider the following suggested implementation:

try:
    if inspect.iscoroutinefunction(self._stagehand.close):
        loop.run_until_complete(self._stagehand.close())
    else:
        self._stagehand.close()
except Exception as e:
    error_context = {
        'operation': 'close_stagehand',
        'error_type': type(e).__name__,
        'error_message': str(e)
    }
    self._logger.error(f"Failed to close Stagehand: {error_context}")

3. Mock Implementation Adjustment

The current mock implementation for testing could be improved by utilizing a proper class structure with dataclass:

@dataclass
class MockResult:
    message: str = "Action completed successfully"

    def model_dump(self):
        return {"message": self.message}

4. Configuration Validation

To ensure that the provided configuration is valid, I recommend adding a validation function:

def validate_config(config: StagehandConfig):
    required_fields = ['api_key', 'project_id', 'model_name']
    for field in required_fields:
        if not getattr(config, field):
            raise ValueError(f"Missing required configuration: {field}")
    if config.model_name not in [model.value for model in AvailableModel]:
        raise ValueError(f"Invalid model name: {config.model_name}")

5. Structured Logging

Implementing structured logging can provide clarity and context in logs, especially during debugging. The log_session_info method should incorporate critical session variables:

def log_session_info(self):
    session_info = {
        'session_id': self._session_id,
        'browser_url': f"https://www.browserbase.com/sessions/{self._session_id}",
        'model_name': self.model_name,
        'project_id': self.project_id
    }
    self._logger.info("Stagehand session initialized", extra=session_info)

Security Considerations

1. Consider implementing encryption for stored API keys to mitigate security risks.
2. Introduce rate limiting for API calls to safeguard against potential abuse.
3. Implement session timeout handling to strengthen session security.

Performance Considerations

1. Connection pooling could be beneficial when managing multiple sessions.
2. Caching frequently accessed pages may enhance performance.
3. Implement a retry mechanism for robust handling of failed requests.

Documentation Improvements

1. Docstrings should be added for all new methods to ensure clarity.
2. Include usage examples for different command types to aid user understanding.
3. Document error scenarios and their handling in the documentation.

Overall, the proposed changes significantly enhance the quality of the codebase and improve the functionality of the Stagehand tool. Implementing the suggested improvements will further solidify the code's reliability and maintainability.